Trane 4DCY4042 User Manual

Installer's Guide
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property. Please return this Installer's Guide to service information pack and give to the homeowner
upon completion of work.
Single Packaged Dual Fuel 14 SEER
Convertible, 2 - 5 Ton, 64 - 120 MBTU
R-410A
4DCY4024 through 4DCY4060
4DCY4-IG-10
18-BG03D1-10
WARNING:
HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE
CAPACITORS BEFORE SERVICING
HAZARDOUS GASSES!
Exposure to fuel substances, or by-products of incomplete
fuel combustion, is believed by the state of California to cause
cancer, birth defects, or other reproductive harm.
This warning complies with State of California law, Proposi-
tion 65.
This product must be gas piped by a Licensed Plumber or
Gas Fitter in the Commonwealth of Massachusetts.
▲
WARNING
!
HAZARDOUS VOLTAGE, MOVING PARTS, AND GAS!
Bodily injury can result from high voltage electrical compo-
nents, fast moving fans, and combustible gas. For protection
from these inherent hazards during installation and service,
the electrical supply must be disconnected and the main
gas valve must be turned off. If operating checks must be
performed with the unit operating, it is the technician's re-
sponsibility to recognize these hazards and proceed safely.
▲
WARNING
!
SAFETY HAZARD!
Do not operate the unit without the evaporator fan or coil
access panels in place. Reinstall the access panels after
performing maintenance proceedures on the fan. Operating
the unit without the access panels properly installed may
result in severe personal injury or death.
▲
WARNING
!
SAFETY HAZARD!
This information is for use by individuals having adequate
backgrounds of electrical and mechanical experience. Any
attempt to repair a central air conditioning product may result
in personal injury and/or property damage. The manufacturer
or seller cannot be responsible for the interpretation of this
information, nor can it assume any liability in connection
with its use.
▲
WARNING
!

Trane 4DCY4042 Specifications

General

Cooling Capacity (BTU)	42, 000
Cooling Capacity (Tons)	3.5
SEER	14
SEER Rating	14
Refrigerant Type	R-410A
Voltage	208/230
Phase	1
Sound Level (Outdoor Unit)	76 dB

Summary

Safety Considerations

Warning and Caution Definitions

Defines "WARNING" and "CAUTION" symbols and their implications for user safety.

Specific Hazard Warnings

Alerts to hazards like fiberglass, explosion, refrigerant, and improper lifting.

Step 2: Determine Unit Clearances

Unit Dimensions and Clearance Requirements

Illustrates critical unit dimensions and provides clearance information across figures 1-6.

Step 4: Unit Installation Procedures

Lifting and Rigging the Unit

Safety guidelines and procedures for lifting and rigging the unit.

Gas Piping and Pressure Adjustment

Covers gas piping installation, pressure setup, pipe sizing, manifold pressure, and input adjustment.

High Altitude, Filter, and Electrical Installation

Electrical Wiring and Power Requirements

Discusses power requirements, disconnects, wiring, and grounding.

4DCY Field Wiring Diagram

Step 5: Unit Startup Procedures

Pre-Start Checklist and System Checks

A comprehensive checklist of installation and safety verification steps before unit operation.

Cooling Mode Startup and Operation

Heat Pump Heating Mode Startup and Operation

Gas Heating Mode Startup and Adjustment

Covers starting the gas heating cycle, checking manifold pressure, and adjusting input.

Final Installation Checklist

A final check of unit operation, safety, and installed components before handover.

Sequence of Operation

Heat Pump and Gas Heating Sequences

Details sequences for 2nd stage gas heat call, cycling, and transitions between heat pump and gas stages.

Transitioning and Shutdown Procedures

Unit Cooling, Defrost, and Safety Features

Cooling Cycle Operation Details

Demand Defrost Operation Explained

Unit Safety Sequences and Devices

Lists and describes various safety devices and sequences.

Maintenance Procedures

Professional Service Recommendations

Flue Hood and Combustion Blower Cleaning